<template>
  <div class="login-container">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on" label-position="left">

      <!-- 放置标题图片 @是设置的别名-->
      <div class="title-container">
        <h3 class="title">
          <img src="@/assets/common/login-logo.png" alt="">
        </h3>
      </div>
      <!-- elementui表单组件校验规则四要素
        1,el-form组件绑定model属性
        2,el-form组件绑定rules属性
        3,表单元素组件所在的form-item
        4,
       -->
      <el-form-item prop="mobile">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="mobile"
          v-model="loginForm.mobile"
          placeholder="请输入账号"
          name="mobile"
          type="text"
          tabindex="1"
          auto-complete="off"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="请输入密码"
          name="password"
          tabindex="2"
          auto-complete="off"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>

      <el-button :loading="loading" type="primary" style="width:100%;margin-bottom:30px;" class="loginBtn" @click.native.prevent="handleLogin">登录</el-button>

      <div class="tips">
        <span style="margin-right:20px;">账号: 13800000001/2/3/4</span>
        <span> 密码: 123456</span>
        {{ $store.state.user.token }}--{{ $store.getters.token }}
      </div>

    </el-form>
  </div>
</template>

<script>

export default {
  name: 'Login',
  data() {
    return {
      // form关联的表单
      loginForm: {
        mobile: '13800000002',
        password: '123456'
      },
      // form的校验规则
      loginRules: {
        mobile: [
          // { required: true, trigger: 'blur', validator: validateUsername }
          { required: true, trigger: ['blur', 'change'], message: '账号不能为空' },
          { pattern: /^1[3-9]\d{9}$/, trigger: ['blur', 'change'], message: '请输入11位手机号' }
        ],
        password: [
          // { required: true, trigger: 'blur', validator: validatePassword }
          { required: true, trigger: ['blur', 'change'], message: '密码不能为空' },
          { min: 6, max: 16, message: '密码必须是6-16位', trigger: ['blur', 'change'] }
        ]
      },
      loading: false, // 控制登录按钮禁用效果
      passwordType: 'password',
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      // 1,预校验
      this.$refs.loginForm.validate(async(valid) => {
        if (valid) {
          // 2,预校验通过后开启登录按钮禁用(防止多次登录点击)
          this.loading = true
          // 3,携带账号密码触发登录的action
          try {
            await this.$store.dispatch('user/login', this.loginForm)

            // 4,根据登录状态 做 对应的消息提示
            // if (res.data.success) {
            //   this.$message.success(
            //     // {message: '恭喜你',
            //     // type: 'success'}
            //     res.data.message // 简写
            //   )
            // } else {
            //   this.$message.error(res.data.message)
            // } 已经优化到拦截器里了
            // 5,页面跳转
            this.$router.push('/')
          } finally { // catch (error) {}  因为不写东西会报错,因此注释掉了
            // 6,关闭禁用
            // finally 不论执行的是try还是catch 最终都会执行 finally
            this.loading = false
          }
        } else {
          console.log('error submit!!')
          return false
        }
      })
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */
// 设置登录按钮的样式*
.loginBtn {
  background: #407ffe;
  height: 64px;
  line-height: 32px;
  font-size: 24px;
}
// 设置错误信息的颜色
.el-form-item__error {
    color: #fff;
    font-size: 14px;
 }
$bg:#283443;
$light_gray:#407ffe;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
   background-image: url('~@/assets/common/login.jpg'); // 设置背景图片
  background-position: center; // 将图片位置设置为充满整个屏幕
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.9); // 输入登录表单的背景色
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg:#2d3a4b;
$dark_gray:#889aa4;
$light_gray:#eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
